calc-q-factor-for-vna/source/frontend/info.md

Usage:

App calculates the quality factor and its random error in the electric circuit for the set of vector analyzer measuremets.

Input data

The measurements made by a vector network analyzer (set of frequencies and corresponding network parameters). Main supported file format is .snp, but similar formats are accepted too. Noise data is not supported.

• Supported network parameters: S, Z
• Supported parameters representations: real and imaginary; magnitude and angle; db and angle

Result

• Loaded and unloaded quality factor (q-factor) with random errors
• plot amplitude vs frequency
• Smith chart

Calculation method

Calculation of Q-factor and random errors is based on the algorithm, described in [1-2]. Correction for coupling loss is implemented according to [3].

References

[1]: Random and Systematic Uncertainties of Reflection-Type Q-Factor Measurement with Network Analyzer (2003).

DOI: 10.1109/TMTT.2002.807831

[2]: Data Processing For Q Factor Measurement (1994).

DOI: 10.1109/ARFTG.1994.327064

[3]: Q Factor Measurements Using MATLAB (2011).

ISBN: 978-1-60807-161-6

External links

Github

Alternatives

• http://scikit-rf.org/
• https://people.engineering.olemiss.edu/darko-kajfez/software/